vinacoma3.vn

https://vinacoma3.vn· First analyzed 14 May 2026· Updated 14 May 2026

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vinacoma3.vn

Mobile

Sponsored

Hosting Provider

NHANHOA

IP Address

103.28.36.126

Site Location

🇻🇳 Hà Nội, Vietnamvia tld

Server Location

🇻🇳 Đống Đa, Vietnam

ASN

AS131353

Organization

NHANHOA

Server

LiteSpeed

Nameservers

ns1.zonedns.vn.ns3.zonedns.vn.ns2.zonedns.vn.

Performance

Core Web Vitals

Weight

First Contentful Paint

756 ms10%

Speed Index

983 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.8 MB

94 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

NHANHOA

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Facebook Pixel Segment

Libraries

Social

Web Servers

Languages

SEO Analysis

D48/100

Meta Tags8/15

Content11/12

Headings1/8

Technical10/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

vinacoma3.vnvinacoma3.vn

MÁY MÓC VÀ THIẾT BỊ XÂY DỰNG VINACOMA3

Title Length38 chars

Recommended: 50-60 chars (~245px / 580px)

Description Length38 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (103/103) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Crawlability

Sitemap

Type: standard

570 URLs

robots.txt

Local SEO

Local Search Readiness

16/100

Poor

5 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F35/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

8/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:10%

Words:2,137

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary22w

Descriptive Headingsavg 8w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

41/100

Passed

Critical

Warnings

Images & Alt Text

2/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

7/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

9/100

484 mg

CO₂e / view

3.8 MB

Page Weight

15%

Cleaner Than

New Visitor

553 mg

Returning (cached)

276 mg

Annual (10K/mo)

58.0 kg

Emission Segments

Data Center

108 mg

Network

116 mg

Device

260 mg

Resource Breakdown

JavaScript

60.9 KB

Images

3.7 MB

CSS

21.5 KB

HTML

14.4 KB

Green Hosting Not Verified

NHANHOA

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

206d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

24.11.2025

Valid Until

06.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

vinacoma3.vnwww.vinacoma3.vn

SHA-256 Fingerprint

00:2E:B0:EA:D9:33:83:A5:A7:A2:64:08:56:77:85:8B:DF:10:93:74...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Thu, 14 May 2026 01:11:06 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

vinacoma3.vn

Domain Information

vinacoma3.vn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

26/100

Not Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

WCAG Partial

54/100

Readability

/30

20/30

16px · LH --

Hierarchy

/20

6/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif16px

Contrast Ratio

1:1

10 issues

Reading Comfort

~112 CPL

Too wide

19px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

❌ Very long lines: ~112 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 61

Color Palette

9 unique colors

Light

#ffffff

Background· 31.599999999999998%

#a11116

Primary· 8.5%

#a3b4b5

Secondary· 6.9%

#4e6b82

Secondary· 6.1%

#c96654

Accent· 6%

#debfb0

Secondary· 3.4%

#efecd0

Secondary· 0.5%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

AddThisFree

Facebook SDKFree

Social widgets and sharing tools

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Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

apis.google.com(3)connect.facebook.net(2)vinacoma3.vn(2)google-analytics.com(1)s7.addthis.com(1)

Website Identity

vinacoma3.vn

vinacoma3@gmail.com

Location detected: 🇻🇳 Vietnam, Hà Nộivia tld

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Last analyzed: 14 May 2026 at 01:11

Historical Analysis & Change Tracking